It is safe to give out bank account number

On a couple of scenarios, you might have given out your bank account to an unknown person for any purpose, but the question is, that is it really safe to give out your bank account number to any person you do not have any information?

Here is the answer, different Countries have different policies to withdraw money. such as, in Germany, you need much more than bank account number and bank number to withdraw money. However, in Europe; giving someone bank account number enables them to send you money. 

Therefore, you need you need to check two things in this scenario, one being that do you know that person? if not that what is the reason to give him the account number. Is it for trade or any strong reason. 

Also, refrain from sharing the bank information with your friend, because that information might help the hacker to withdraw money from your account.